Space Flashcards
Aldebaran
an example of a red supergiant
Alpha Centauri
the closest star system to Earth, made up of three stars
Asteroid Belt
separates rock planets from gas planets
Average Star Size
less than four times the size of the Sun
Betelgeuse
a highly unstable red supergiant approximately 600 light years away
Big Bang Theory
the theory that the universe expanded from a single point in space
Big Crunch Theory
the theory that the universe will expand until it reaches at certain point, and the reduce back into nothing, and at the point of nothingness, a new Big Bang will happen
Big Yawn Theory
theory that universe will keep expanding forever
Black Dwarf
when a star cools and eventually becomes a black mass that emits no light, so it will spend the rest of eternity drifting through space
Blackhole
a stage of star death after supernova, leaving behind a huge mass with so much gravity even light is prevented from leaving it, and can suck in nearby stars and solar systems
Blue Giant
a phase in the life cycle of a massive star, where a star burns so hot it becomes blue
CMBR
Cosmic Microwave Background Radiation
the energy left over after the Big Bang, furhter evidence for the Big Bang
Doppler Effect
where the wavelength of a sound changes as something moves, making the sound high pitched as it comes towards you and low pitched as it moves away
Dwarf Planets
planets too small to be classed as proper planets
Pluto
beyond Neptune, used to be classed as a planet until more accurate measurements were done, the biggest dwarf planet
Ceres
dwarf planet just beyond Mars, may sustain life
Eris
second-largest dwarf planet after Pluto
Makemake
dwarf planet roughly sixty percent the size of Pluto
Galaxy
group of stars
GEO
a manmade satellite that orbits the Earth in 1 day